摘要:
A phosphor is represented by below formula: AaBbCcDdEe:Mm wherein, M represents at least one activator selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb and combinations thereof; A represents at least one element selected from Ca2+, Sr2+, Ba2+ and combinations thereof; B represents C4+, Si4+ or Ge4+; C represents B3+, Al3+ or Ga3+; D and E each independently represent at least one element selected from N, O, F and combinations thereof; m+a=2; 0.00001≦m≦0.1; 0.5≦b+c≦8; and 0.5≦d+e≦10. The phosphor has a color render index of greater than 50 and is suitable to be applied in a white LED to improve the color rendering property of the white light. A method of preparing the phosphor is also provided.
摘要翻译:荧光体由下式表示:AaBbCcDdEe:Mm其中,M表示选自Mn,Ce,Pr,Nd,Sm,Eu,Tb,Dy,Ho,Er,Tm,Yb中的至少一种活化剂及其组合; A表示选自Ca 2+,Sr 2+,Ba 2+及其组合中的至少一种元素; B表示C4 +,Si4 +或Ge4 +; C表示B3 +,Al3 +或Ga3 +; D和E各自独立地表示选自N,O,F及其组合中的至少一种元素; m + a = 2; 0.00001≦̸ m≦̸ 0.1; 0.5≦̸ b + c≦̸ 8; 和0.5≦̸ d + e≦̸ 10。 荧光体具有大于50的着色指数,并且适用于白色LED中以提高白光的显色性能。 还提供了制备荧光体的方法。
摘要:
A yellow phosphor material has a host with a formula (TbxMyCez)Al5O12, wherein x+y+z=3 , 3>x>0 and y≠0 and a Ce activator. M is selected from the group consisting of Sc, Y, Dy, Ho, Er, Tm, Yb, and Lu. By changing the diameter of metal ions, the crystal field thereof may be modulated to thereby alter the energy level of the excited state to which the activator is transferred upon irradiation by a specific wavelength of light. The phosphor can be used with a blue LED to form a white light source.
摘要翻译:黄色荧光体材料具有具有下式的主体:具有下式的主体:(B 1 H 5) 其中x + y + z = 3,3> 0和y>和Ce活化剂。 M选自Sc,Y,Dy,Ho,Er,Tm,Yb和Lu。 通过改变金属离子的直径,其晶体场可被调制,从而改变在特定波长的光照射时活化剂转移到的激发态的能级。 荧光体可与蓝色LED一起使用以形成白色光源。
摘要:
This invention discloses a wavelength converting material. The wavelength converting material comprises a metal haloaluminate compound phosphor with a chemical formula Mw-pAlyOzXq:Rp, wherein M is at least one element selected from the group of Be, Mg, Ca, Sr, Ba and Zn; X is at least one element selected from the group of F, Cl, Br, and I; R is one or more elements selected from the group of the transition metals and at least one element selected from the lanthanide series. Because the emitting wavelength of the metal haloaluminate compound phosphor is 550˜650 nm which is from the green to the red light spectrum, the white light mixed by the converted light of the metal haloaluminate phosphor and the blue light has better color rendering index. Besides, this invention also discloses the optoelectronic devices comprising the metal haloaluminate compound phosphor.
摘要:
A method for manufacturing a white light source includes steps of providing an ultra-violet light as a radiation source, preparing three kinds of first phosphors each receiving the ultra-violet light and emitting the light of red, green and blue, respectively, and preparing at least one additional second phosphor to modify a spectral property of the light emitted by the three first phosphors in order to improve the brightness and color rendering property of the white light source. Moreover, at least one phosphor with the fluorescent property is used as the above second phosphor powder to obtain a color-changeable light source.
摘要:
A white light-emitting device comprising a blue-violet or blue LED and a phosphor material capable of emitting a yellow-green to orange-yellow light upon excitation by the light emitted by the LED. The light from the LED and the phosphor material are mixed in an appropriate ratio to produce a white light. The phosphor material has a general formula (YxMyCez)Al5O12, where x+y=3, x, y≠0, 0.5>z>0, and M is selected from the group consisting of Tb, Lu, and Yb, with (YxMy)Al5O12 serving as a host and Ce as an activator. By changing the composition of the metal elements in the host, the crystal field is modulated to thereby alter the energy level of the excited state to which the activator is transferred upon irradiation by a specific wavelength of light, leading to the change in the emitting wavelength of the phosphor material.
摘要翻译:一种白色发光装置,其包括蓝紫色或蓝色LED,以及荧光体材料,其在由LED发射的光激发时能够发出黄绿色至橙黄色光。 来自LED和磷光体材料的光以适当的比例混合以产生白光。 荧光体材料具有通式(Y 1),以及C 1至C 5 其中x + y = 3,x,y> 0,0.5> z> 0,并且M选自Tb,Lu和Yb,其中(Y x x) 作为主体的Ce 5 N 12 O 12,Ce作为活化剂。 通过改变主体中的金属元素的组成,晶体场被调制,从而改变在特定波长的光照射时活化剂被转移的激发态的能级,导致发射波长的变化 的荧光体材料。
摘要:
This invention discloses a wavelength converting material. The wavelength converting material comprises a metal haloaluminate compound phosphor with a chemical formula Mw-pAlyOzXq:Rp, wherein M is at least one element selected from the group of Be, Mg, Ca, Sr, Ba and Zn; X is at least one element selected from the group of F, Cl, Br, and I; R is one or more elements selected from the group of the transition metals and at least one element selected from the lanthanide series. Because the emitting wavelength of the metal haloaluminate compound phosphor is 550˜650 nm which is from the green to the red light spectrum, the white light mixed by the converted light of the metal haloaluminate phosphor and the blue light has better color rendering index. Besides, this invention also discloses the optoelectronic devices comprising the metal haloaluminate compound phosphor.
摘要:
This application discloses a light-emitting device with narrow dominant wavelength distribution and a method of making the same. The light-emitting device with narrow dominant wavelength distribution at least includes a substrate, a plurality of light-emitting stacked layers on the substrate, and a plurality of wavelength transforming layers on the light-emitting stacked layers, wherein the light-emitting stacked layer emits a first light with a first dominant wavelength variation; the wavelength transforming layer absorbs the first light and converts the first light into the second light with a second dominant wavelength variation; and the first dominant wavelength variation is larger than the second dominant wavelength variation.
摘要:
A method for manufacturing a white light source provides an LED light source and a semiconductor-type phosphor with (Zn, Cd)S being the host with foreign ions added thereto as luminescence centers. The LED light source emits light ranging from 495 nm about (blue-green light) to about 340 nm (ultra-violet).